Re: [PATCH] cairolatex: respect transparency setting

[Ethan A M. <me...@uw...>]

On Thursday, 20 August 2020 19:34:40 PDT Henri Menke wrote:
> Now there seems to a problem with ordering of the elements in the
> resulting TeX file.  The ticklabels are behind the background image.
> Even if transparency is enabled, this is probably a bad idea.  I'll
> investigate.

That is controlled by a generic setting, not specific to the latex terminals:

    set tics {front|back}

The default is "back".

	Ethan


> 
> Cheers, Henri
> 
> On 21/08/20, 13:34, Henri Menke wrote:
> > Currently the cairolatex terminal does not respect transparency options
> > given in the terminal setting.  In this minimal example the
> > notransparent option is ignored:
> > 
> >     set terminal cairolatex png notransparent
> >     set output "test.tex"
> >     plot sin(x)
> > 
> > Running this through gnuplot and then using `file' reveals that the
> > alpha channel is still present:
> > 
> >     $ gnuplot test.gnuplot && file test.png
> >     test.png: PNG image data, 1500 x 900, 8-bit/color RGBA, non-interlace
> > 
> > With this patch the transparency setting will be honoured.  The current
> > default setting of implicitly assuming transparency is unaltered.
> > ---
> >  term/cairo.trm | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/term/cairo.trm b/term/cairo.trm
> > index ee748dfe2..3ef76ecc6 100644
> > --- a/term/cairo.trm
> > +++ b/term/cairo.trm
> > @@ -849,7 +849,7 @@ void cairotrm_graphics()
> >  	plot.background.g = cairo_params->background.g;
> >  	plot.background.b = cairo_params->background.b;
> >  	gp_cairo_set_background(cairo_params->background);
> > -	if (ISCAIROLATEX || cairo_params->transparent)
> > +	if (cairo_params->transparent)
> >  		gp_cairo_clear_background(&plot);
> >  	else
> >  		gp_cairo_solid_background(&plot);
>